JLefevers

Ok just finshed up on my buddies auto to manual in a 97 civic hx. Everything went fine but now when you crank it it like to idel around 3000rpm's and when I ran the codes we get...
#7 TPS - throttle position sensor
#10 IAT - intake air temperature sensor
#91 Fuel Tank pressure sensor
I have ran through and checked all the wiring is there something I am missing???
Also once we got done and fired it up his SRS light comes on and stays on?

JLefevers

bump

Luserkid

What exactly did you do?

JLefevers

97 civic HX AUTO installed a manual pedals and tranny, intake mani, and ecu. Also placed a two wire IACV and switched the wiring at the ecu plugs.
Now the car cranks and runs but idle's at 3000 rpm's. When running the codes I get these
#7 TPS - throttle position sensor
#10 IAT - intake air temperature sensor
#91 Fuel Tank pressure sensor
I am asking Why these codes, and also wtf is up with the FUEL TANK PRESSURE SENSOR.
I was thinking that maybe the HX models never cam with it and the y8 ecu is looking for it. can someone please shed some light on this.

Luserkid

That doesnt tell anything. Lets play the guessing game here since you cant give info. Ill guess you only changed the transmission, used the HX ecu (which looks for a 3wire IAC so that code should be popping up soon too). For your IAT since this is the guessing game you switched it with your EVAP (possibly frying your ecu as well so check that). For TPS you dont have it plugged in or broke it during the swap. Needs replace. For Fuel Tank you probably didnt tighten your gas cap on last fill up.

JLefevers

dude man come on if ur goona be like that then get out. I need some real info here. If you read in my post I replacedwith the manual ecu and also have changed the IACV plug. If the ECU was fryed it would not run. It drives fine but at idle it sit at like 3000rpm's. Also I didn't break the TPS I am standing here looking at it. It would be great if someone could hook me up with the wiring digram of the 97 Auto HX, and the 98 manual EX. relating to the FTPS, TPS, IAT

BWoolard

bump

JLefevers

bump it up any info i think that the wiring is a lil different in the auto hx from the the manual ex and i may need to do some repinning at the ecu but some digram of ecu pinout would be great. ALL HONDA WIRING GURU's WE NEED YOU!!!!

4gencivicef9

well from reading the post, I assuming that you might have a vacuum leak maybe check for that, try switching out the iacv and iat sensors they might be bad so they have a procedure to check the sensors so ''I would try something along those lines, also what year ecu do you have, and you sure you didnt unplug any yellow wire loom connectors which would set a light ...

JLefevers

see I was also saying vacume leak but here is the thing on the auto harness and car there is a little black sensor on the firewall a little to the left it has a red wire coming from the harness and has two vacume lines that went to the auto intake mani but the manual intake mani doesn't have a placer for them what should i do with them because right now I just have them looped together. I was thiking of "T" them in with the other vacume lines. But that still doesn't fix my problems with the CEL. I was thinking that I may have to repin the auto harness for those 3 sensors'.
oh and by the way I am running a 98 CIVIC EX manual ecu, intake mani

JLefevers

ttt

d357r0y

the 98 EX intake manifold is equipped with a (lame ***) air assist setup. On the front of the IM, in front of the injectors right where the flange meets the head, there is a vacuum fitting that feeds the injectors to give a leaner/cleaner fuel mix. What you have to do is this..

Take the manifold off and remove the injectors. Once off, you'll see 1 little hole on the top side of the area where the injector plug into the manifold. You should tap these holes and run a threaded plug into them but, what I did was run a self tapping screw into each hole to rough it up and then filled it with some JB weld. It worked great and has held for years under different users.

3000 RPM idle, fixed!

4gencivicef9

awesome...

JLefevers

thanks for the help anybody else have any info on the codes?? and the wiring?

JLefevers

ok new info I put the auto ecu in the car and it no longer threw the
#7 TPS
#91 FTPS
so this means that nothing is wrong it is just in the wiring like I thought so can anybody help me out with the ecu wiring diagrams for a
97 CIVIC HX AUTO
98 CIVIC EX MANUAL
I am thinking that once I depinn and switch the wire everything should be Ok but I need the ecu pinouts. also thanks for the info on the intake mani.

JLefevers

ttt

ihleb

THE WIRE HARNESS SHOULDNT BE DIFFERENT FROM AUTO TO MANUAL WITH THE EXCEPTION OF TRANSMISSION WIRES THAT YOU WILL NOT HOOK UP

JLefevers

take caps off ok thankx. the harness has to be different due to the fact that when you throw in the auto ecu the codes go away. so the the auto ecu and the manual ecu have different pinout or something.

BWoolard

Bump

Dasfinc

You are running the wrong ECU, Period.

Install the correct ECU, then begin troubleshooting.

The D16Y8 is a very VERY different motor from the HX, so codes being thrown may very well be irrelevant.

jdmek2277

hey i know its a little off topic but im kinda stuck rite now....wat tranny mount and bracket did u use for the conversion?

BWoolard

So..... if Im running the wrong ECU.... could somebody tell me what ECU Im supposed to have??